Nut-lock.



PATBNTED APR. 18, 1905. l

B. Dl THOMPSON.

NUT LOCK.

APPLIoA'HoN FILED JAN. 2o, 1905.

@JUE new UNITED STATES Patented April 18, 1905.

PATENT UEEICE.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 787,804, dated April 18, 1905.

Application filed January 20, 1905. Serial No. 241,978.

Be it known that I, Bunennnn D. THOMP- soN, a citizen of the United States, residing at Bradford, in the county olE McKean and State of Pennsylvania, have invented certain new and uselul improvements in Nut- Locks, ol! which the Vfollowing is a speciiication, reference being had therein to the accompanying drawings.

My invention relates to improvements in nut-locks, and pertains more larrticularly to that class in which a transverse key is adapted to engage the threads of the bolt.

'lhe object oi my invention is to provide a nut-lock oi this character, in which the transverse key carried by the nut is wholly within the same and is locked therein by an additional loek, which is also wholly within the nut.

Another object of my invention is to provide a lock oi this character in which interlocking ot the key and lock holds the two in their locked or unlocked position against rotation.

In the accompanying drawings, Figure l is a perspective view ol the nut applied to the bolt and locked thereon and the operatingkey inserted therein. Fig. 2 is a transverse sectional view taken on the line 2 2 ot Fig. l. Fig. 3 is a longitudinal sectional view taken on the line B 3 ot Fig. 2. Fig. l is a transverse sectional view showing the key turned so that the nut is free to turn. Fig. is a detaehed perspective viewol" the key, thelocking-key, and the key-locking means, showing their relative positions.

Referring now to the drawings, A represents a bolt broken oil and having the usual screw-threaded portion u., upon which is screwed a nut B, which is provided with the usual screwthreaded opening b, through which the bolt is adapted to pass. The said nut is provided with a transverse recess C, extending i'rom one side thereol" through the nut and intersecting the opening b at one side and extending beyond the same, but not through the wall of the opposite side oi the nut. This recess is simply a hole. bored into the nut, and loosely fitting into the said recess is a round key D, winch 1s adapted to Ylreely rotate, and said key is of a length to extend from the inner closed end c ol" the recess D out to and [lush with the side wall of the nut, and thus there is nothing projecting beyond the nut. The end d of the key is reduced and squared, as shown, and thus a key .E may be inserted in the recess l'or turning tho thread-engaging key. The said key opposite that portion ol' the recess which intersects the threaded opening in the nut is provided on one side with a curved cut-away portion F, which corresponds to the curvature olt the bolt, and thus when said keyis so turned that this rounded portion registers with the screwopening in the nut the nut is l'ree to turn on the bolt. The said key is provided with laterally-extending tooth portions G, having the nut orbolt, and thus allowing the cut-away portion to register with the threads, I provide a transverse lock K, which engages the end of the thread-engaging key at right augles thereto and locks the key in either of the above-lnentioned positions.

The nut B is provided with a recess l, which extends inwardly lrom one side olE the nut at right angles to the recess C, carrying the key D, and squarely intersects it and extends inwardly beyond the same. The said key D adjacent its inner end is provided with a cutaway `portion forming three flat faces i, fi, and i?, but leaving a small portion l ot the round key at the end, as clearly shown in Figs. 2, 4, and 5, l'orming the .locking-simuldcr to prevent the key from sliding lroln the nut. The recess l, intersecting the key-carrying recess, is provided at its inner end with a coil-spring J which rests loosely therein, and lfitting loosely within the outer end is the key-locking member K. The said member is ot' a cylindrical vlorm and is provided with the transverse cut-away portions /r and 7c. The portion A', being adjacent the inner end thereof, and the cut-away portion /r adjacent the IOO outer end, is wider and much deeper, as hereinafter more fully described, the positioning of the two recesses being such that the cutaway portion 7c when the lock is forced in against the tension of the spring will be opposite the cut-away portion of the lock. Releasing the lock brings the lower shallow cutaway portion la in engagement with one of the three flat faces i, i, and i2 of the cutaway portion of the key, and thus the key is prevented from being turned and is rigidly locked in any position with either the teeth in engagement with the threads of the bolt and locking-nutthereon or with the curved portion opposite the threads, so that the nut is free to turn on the bolt.

By this structure l have taken the ordinary bolt and nut and drilled the two intersecting recesses in the nut and placed the spring and interlocking members therein, which are adapted to hold each other in their operative positions and in which the same may be readily placed therein and removed, as desired, when using the nut when a lock is not desired.

In order to insert the two interlocking members in the nut, the same is removed from the bolt and the spring J is first inserted. The lock K is then placed therein, the spring holding the outer edge thereof flush with the side of the nut. The keyD is then placed therein, bringing the end against the lock K opposite the cut-away portion 7c. The member K is next depressed, which brings the enlarged cut-away portion lc opposite the end of the keyD, which allows of the same being forced all the way into the recess and releases the lock K, which brings the cutaway portion lc in engagement with one of the Allat faces i, i', and 2, and thus the key is locked in the said position. To turn the key, the instrument E is first inserted, as shown in Fig. 2, and the lock K forced inward, as shown in Fig. 4, which brings the cut-away portion 76 opposite the flat faces i, i', and 2, and thus the key may be turned so that the nut is either free to turn or locked on the bolt.

Having thus described my invention, what l claim, and desire to secure by Letters Patent, is-

1. The combination with a bolt, of a nut thereon, a transverse rotatable thread-engaging member within the nut, and a transverse sliding key entering the nut and adapted to lock said member within the nut.

2. The combination with a bolt, of a nut thereon, a transverse rotatable thread-engaging member ivithin the nut, and a transverse sliding key entering the nut and adapted to lock said member within the nut and also against rotation.

3. The combination with a bolt, of a nut thereon, a transverse rotatable thread-engaging memberwithin the nut, and a transverse sliding key entering the nut and interlocking with rotatable member and adapted tohold the same within the nut and against rotation when engaging the threads.

4. The combination with a bolt, of a nut thereon, a transverse rotatable thread-engaging member within the nut, and a transverse sliding key entering the nut and normally outwardly held and interlocking with the rotatable member and adapted to hold the same within the nut, and also against rotation when the same is engaging the threads of the bolt.

5. The combination with a bolt, of a nut thereon, a transverse member intersecting the opening in the nut and having a cutaway portion to allow the threads of the bolt to pass, said member having on another side the thread-engaging teeth, and a member carried by the nut and extending at right angles to the transverse member and adapted to lock said member Within the nut and to lock it with either the cut-away portion or teeth opposite the threads of the nut.

6. The combination with a bolt, of a nut thereon, a transverse key carried by the nut and a transverse member interlocking with the key and holding each other within the nut.

7. The combination with a bolt, of a nut thereon, a transverse key loosely extending within the nut and adapted to engage the threads of the bolt, and a transverse member extending at right angles to the key and interlocking with the same, and holding each other within said nut.

8. The combination with a bolt, of a nut thereon, a transverse key carried by the nut and a transverse member interlocking with the key and holding each other Within the nut, and means carried by the transverse member for locking the key in its adjusted position.

9. The combination with a bolt, of a nut thereon, a transverse rotatable key carried by the nut and adapted to engage the threads of the bolt, a transverse member interlocking with the key and holding each other within the nut, and means carried by the transverse member for holding the key in its adjusted position against rotation.

10. The combination with a bolt, of a nut thereon, a transverse rotatable key carried by the nut and having a concaved face to allow the threads of the bolt to pass, teeth carried by said key and adapted to engage the threads of the bolt, an outwardly springpressed member interlocking with the key and holding each other within the nut, and means carried by said member for holding the key in its rotating position, and means carried byv said member for allowing the rotation of the key.

1l. The combination with a bolt, of a nut thereon and having a transverse opening intersecting one side of the bolt-opening, a ro- IOO IIO

tatable transverse key in said opening wholly within the nut, said key having one tace thereol opposite the bolt-opening cut away 1 and another lace provided with transverse thread-engaging teeth, the inner end el the key provided with a cut-away portion lorming three llat laees, said nut having a second tion communicating therewith and extending adjacent the inner end ot' said member, and adapted to interlock with the cut-away portion ol the key, and to hold the same against rotation, and when the said member is depressed the enlarged cut-away portion registering with the key and allowing of the i rotation thereof.

12. The combination with a bolt, of a nut thereon, a transverse meinberloosely extending within the nut and adapted to engage the threads ol the bolt, and a transverse key outwardly spring-pressed, and interlocking with the transverse member, and holding each other within said nut.

13. The combination with a bolt, ot a nut thereon, a transverse rotatable member therein and adapted to engage the threads ol' the bolt, and a transverse outwardly springpressed key interlocking with the transverse member and holding each other within the nut.

l1. The combination with a bolt, ol' a nut thereon, at ransverse rotatable member therein and adapted to engage the threads ol' the bolt, and a transverse sliding key adapted to lock the member against rotation.

15. The combination with a bolt, ol a nut thereon, a transverse rotatable member therein and adapted to engage the threads ot the bolt, and a sliding key extending at right angles to the said member and interlocking with the same and adapted to loek said member in its rotated position, and the interlocking of the member and key adapted to hold each other within the nut.

16. The combination with a bolt, of a nut thereon, a transverse rotatable member therein and adapted to engage the threads of the bolt, and a sliding key extending at right angles to the said rotatable member, and interlock-ing with the said member, a spring normally holding the said key in an outward position, and the interlocking ot' the key adapted to hold the member in its rotated position and holding each other within the nut.

17. The combination with a bolt, of a nut thereon and having a transverse opening intersecting one side of the bolt-opening, a rotatable transverse member in said opening wholly within the nut, the outer end ol" said Ykey having a reduced squared portion lor the reception of a key, said member having one face thereof opposite the bolt-opening cut away and another l'aec provided with transverse thread-engaging teeth, the inner end ol the said member provided with a cut-away portion forming three [lat laces, said nut having a second opening at right angles to the first opening and squarely intersecting the same, a coiled spring within the inner end of said opening a member within said opening and normally outwardly spring-held and held therein by interlocking with the thread-engaging member, said member having a deep transverse cutaway portion adj aeent its outer end and a shallower cut-away portion communicating therewith and extending adjacent the inner end of said member, and adapted to interlock with the eut-away portion ot' the key and to hold the same against rotation, and when said key is depressed the enlarged cut-away portion registering with the thread-engaging member and allowing ol the rotation thereof.

In testimony whereof I allx my signature in presence ol two witnesses.

BURCHARD D. THOMPSON,

Witnesses:

HERMAN H. Non'rn, EnwARn JiFKiNs, 

